Docker¶
Docker helps you package applications with all their dependencies and run them consistently across environments — from local development to production.
This section is designed as a practical Docker learning path, starting from core concepts and moving toward real-world usage.
🧱 Docker Fundamentals¶
Understand why Docker exists and how it solves dependency and environment issues.
- What is Docker
- Physical Server → VM → Containers
- Docker Images vs Containers
- How Docker fits into CI/CD workflows
⚙️ Docker Installation & Setup¶
Set up Docker correctly before building or running containers.
- Install Docker on Linux
- Verify Docker installation
- Basic Docker CLI usage
📦 Working with Docker Images¶
Learn how images are created, tagged, stored, and shared.
- Pull images from Docker Hub
- Build custom images
- Tag and manage images
- Push images to public and private repositories
🧩 Dockerfile Essentials¶
Create reproducible and optimized Docker images.
- Writing basic Dockerfiles
- Installing packages using Dockerfile
- Multi-stage Docker builds
- Running Java applications in containers
🚀 Running Containers¶
Understand container lifecycle and runtime behavior.
- Running containers
- Port mapping
- Logs and container inspection
- Resource usage (CPU / Memory)
🔄 Docker in Real Projects¶
Apply Docker in real-world DevOps scenarios.
- Containerizing web applications
- Using Docker with Jenkins pipelines
- Preparing images for Kubernetes
🧭 What’s Next?¶
After Docker, continue with:
- Kubernetes for orchestration
- Helm for packaging deployments
- CI/CD pipelines using Jenkins